3 papers
cond-mat.mes-hall2025
Real space quantum metric of solids
Lucas A. Oliveira, Wei Chen
By applying the projector to the filled lattice eigenstates on a specific position, or applying the local electron annihilation operator on the many-body ground state, one can cons…
cond-mat.str-el2024
Quantum geometrical properties of topological materials
Wei Chen
The momentum space of topological insulators and topological superconductors is equipped with a quantum metric defined from the overlap of neighboring valence band states or quasih…
cond-mat.mtrl-sci2024
Detecting the spread of valence band Wannier functions by optical sum rules
Luis F. Cárdenas-Castillo, Shuai Zhang, Denis Kochan +2
The spread of valence band Wannier functions in semiconductors and insulators is a characteristic property that gives a rough estimation of how insulating is the material. We elabo…